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Help with temperature ratings

Hiya, I'm planning a winter AT section hike starting around November in VA, going South. I'm just trying to get temperatures figured out for my hammock, and hoping you guys could help prevent a chilly night (I haven't tried hammock camping before!).

I'm thinking of using these for weather protection (this is what I have so far):
* 3-layer Insultex 3/4 length DIY under quilt (thanks sclittlefield!)
* 1/2" full length closed cell pad
* Mountain Hardware 10degF sleeping bag for top quilt
* 12'x12' Gear Guide tarp (I know the proper A-Frame configuration, but are there any others that are important?)
* And lots of clothing for backup

I'm hoping this will get me down to 0-10degF, as that's the worst I should possibly encounter (temperature averages are in the high 20s for these states I believe).

Will those alone hold me? Around what temperature will this take me to? I'm thinking of adding something else, and these are the options floating around in my head, but I don't know if anything extra is necessary:

* I could construct a hammock sock, which you guys have said will add about 10degF.
* Reflectix and Space Blankets are arguably useless, I've read in a few threads, so I will avoid those.
* I also have some down pillows I purchased a while ago that could be crafted into a pea pod. This will take a good chunk of time, however, and I hope that I wont need to do this. But I will if what I have isn't strong enough, because I know they're comfy.
* An extra or thicker pad could be used, but again I have no idea of temperature ratings for CCF pads.
* Some kind of double hammock? I'm very unfamiliar with these, but have seen them pop up here and there in various threads.

I just don't consider insultex as a true replacement for the synthetics or down; especially at sub freezing temperatures.

If it were me, I would make or buy a syn UQ or down UQ.

good luck

I'm thinking this too. I might try to pull a few dozen hours out of my hat and make a down under quilt, since I already have the down for it. There's a good guide for one around here somewhere *wanders off flipping over rocks*

A Baby Orca 3/4 length IX underquilt + DIY Reflectix shell, coupled with a 24* rated Coleman bag as top quilt got me down to 24* last Dec. in Oklahoma. I may have stuffed some extra clothing between the underquilt and the shell.

I don't remember what clothing I also had on, but nothing fancy, with a base layer, wool socks, maybe a fleece vest, balaclava, and beenie.

This combination was fine on this occasion, but though I was comfortable enough, I'm thinking I was near the edge.

I can't imagine that your IX underquilt coupled with the CCF pad wouldn't get you even lower than I got.

A Baby Orca 3/4 length IX underquilt + DIY Reflectix shell, coupled with a 24* rated Coleman bag as top quilt got me down to 24* last Dec. in Oklahoma. I may have stuffed some extra clothing between the underquilt and the shell.

I don't remember what clothing I also had on, but nothing fancy, with a base layer, wool socks, maybe a fleece vest, balaclava, and beenie.

This combination was fine on this occasion, but though I was comfortable enough, I'm thinking I was near the edge.

I can't imagine that your IX underquilt coupled with the CCF pad wouldn't get you even lower than I got.

Interesting! ~20-30degF is the nightly temperatures that I'm going to be expecting. Eventually it will drop down to 10degF, and a very bad weather system could potentially drop it down to 0degF.